linux/net/ipv4/tcp_offload.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	IPV4 GSO/GRO offload support
 *	Linux INET implementation
 *
 *	TCPv4 GSO/GRO support
 */

#include <linux/indirect_call_wrapper.h>
#include <linux/skbuff.h>
#include <net/gro.h>
#include <net/gso.h>
#include <net/tcp.h>
#include <net/protocol.h>

static void tcp_gso_tstamp(struct sk_buff *skb, unsigned int ts_seq,
			   unsigned int seq, unsigned int mss)
{ … }

static void __tcpv4_gso_segment_csum(struct sk_buff *seg,
				     __be32 *oldip, __be32 newip,
				     __be16 *oldport, __be16 newport)
{ … }

static struct sk_buff *__tcpv4_gso_segment_list_csum(struct sk_buff *segs)
{ … }

static struct sk_buff *__tcp4_gso_segment_list(struct sk_buff *skb,
					      netdev_features_t features)
{ … }

static struct sk_buff *tcp4_gso_segment(struct sk_buff *skb,
					netdev_features_t features)
{ … }

struct sk_buff *tcp_gso_segment(struct sk_buff *skb,
				netdev_features_t features)
{ … }

struct sk_buff *tcp_gro_lookup(struct list_head *head, struct tcphdr *th)
{ … }

struct tcphdr *tcp_gro_pull_header(struct sk_buff *skb)
{ … }

struct sk_buff *tcp_gro_receive(struct list_head *head, struct sk_buff *skb,
				struct tcphdr *th)
{ … }

void tcp_gro_complete(struct sk_buff *skb)
{ … }
EXPORT_SYMBOL(…);

static void tcp4_check_fraglist_gro(struct list_head *head, struct sk_buff *skb,
				    struct tcphdr *th)
{ … }

INDIRECT_CALLABLE_SCOPE
struct sk_buff *tcp4_gro_receive(struct list_head *head, struct sk_buff *skb)
{ … }

INDIRECT_CALLABLE_SCOPE int tcp4_gro_complete(struct sk_buff *skb, int thoff)
{ … }

int __init tcpv4_offload_init(void)
{ … }